Detail publikace

Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics

BIJALWAN, V. ERHART, J. SPOTZ, Z. SOBOLA, D. PRAJZLER, V. TOFEL, P. MACA, K.

Originální název

Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics

Anglický název

Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics

Jazyk

en

Originální abstrakt

A comprehensive study on energy harvesting characteristics as well as electro-mechanical properties of lead-free (1-x)(BaZr0.2Ti0.8)O-3-x(Ba0.7Ca0.3Ti)O(3)ceramics were systematically carried out. Raman and Rietveld analyses show a formation of rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary region between 4/6 BZT/BCT and 6/4 BZT/BCT compositional range. Raman modes shift toward lower frequencies with increased Zr/Ca stoichiometric ratio attributed to asymmetric Ti-O phonon vibrations, which caused local disorder, widening of energy band and reduced Curie temperature. The large mechanical quality factorQ(m) = 556 is related to the hardening effect and significantly high energy conversion efficiency eta = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in whichd(33) = 500 pC/N (from quasi-staticd(33)meter),d(33) = 540 pm/V (from field-dependent d(33)curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constantg(33) = 27 x 10(-3) Vm/N, transduction coefficientd(33) x g(33) = 13 301 x 10(-15) m(2)/N, figure of merit under off-resonance conditions FOMoff = 12.1 x 10(-10) m(2)/N and fairly large eta of 94% were attained again for 5/5 BZT/BCT ceramics. These outstanding characteristics were ascribed to the R-O-T phase boundary region that comprises a low energy barrier, consequently facilitated easy polarization rotation and triggered an increased electro-mechanical conversion. These characteristics outperform other lead-free and even most commercially available lead-based ceramics, and thus suitable for sensors, actuators, resonators, and energy harvesting applications.

Anglický abstrakt

A comprehensive study on energy harvesting characteristics as well as electro-mechanical properties of lead-free (1-x)(BaZr0.2Ti0.8)O-3-x(Ba0.7Ca0.3Ti)O(3)ceramics were systematically carried out. Raman and Rietveld analyses show a formation of rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary region between 4/6 BZT/BCT and 6/4 BZT/BCT compositional range. Raman modes shift toward lower frequencies with increased Zr/Ca stoichiometric ratio attributed to asymmetric Ti-O phonon vibrations, which caused local disorder, widening of energy band and reduced Curie temperature. The large mechanical quality factorQ(m) = 556 is related to the hardening effect and significantly high energy conversion efficiency eta = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in whichd(33) = 500 pC/N (from quasi-staticd(33)meter),d(33) = 540 pm/V (from field-dependent d(33)curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constantg(33) = 27 x 10(-3) Vm/N, transduction coefficientd(33) x g(33) = 13 301 x 10(-15) m(2)/N, figure of merit under off-resonance conditions FOMoff = 12.1 x 10(-10) m(2)/N and fairly large eta of 94% were attained again for 5/5 BZT/BCT ceramics. These outstanding characteristics were ascribed to the R-O-T phase boundary region that comprises a low energy barrier, consequently facilitated easy polarization rotation and triggered an increased electro-mechanical conversion. These characteristics outperform other lead-free and even most commercially available lead-based ceramics, and thus suitable for sensors, actuators, resonators, and energy harvesting applications.

Dokumenty

BibTex


@article{BUT169316,
  author="Vijay {Bijalwan} and Jiří {Erhart} and Zdeněk {Spotz} and Dinara {Sobola} and Vladimír {Prajzler} and Pavel {Tofel} and Karel {Maca}",
  title="Composition driven (Ba,Ca)(Zr,Ti)O(3)lead-free ceramics with large quality factor and energy harvesting characteristics",
  annote="A comprehensive study on energy harvesting characteristics as well as electro-mechanical properties of lead-free (1-x)(BaZr0.2Ti0.8)O-3-x(Ba0.7Ca0.3Ti)O(3)ceramics were systematically carried out. Raman and Rietveld analyses show a formation of rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary region between 4/6 BZT/BCT and 6/4 BZT/BCT compositional range. Raman modes shift toward lower frequencies with increased Zr/Ca stoichiometric ratio attributed to asymmetric Ti-O phonon vibrations, which caused local disorder, widening of energy band and reduced Curie temperature. The large mechanical quality factorQ(m) = 556 is related to the hardening effect and significantly high energy conversion efficiency eta = 96% was discovered for 3/7 BZT/BCT composition. Largely, the noblest electro-mechanical properties were retrieved for 5/5 BZT/BCT ceramics, in whichd(33) = 500 pC/N (from quasi-staticd(33)meter),d(33) = 540 pm/V (from field-dependent d(33)curves) indicating that the both methods are analogous with a deviation of 8%. The outstanding energy harvesting characteristics such as voltage constantg(33) = 27 x 10(-3) Vm/N, transduction coefficientd(33) x g(33) = 13 301 x 10(-15) m(2)/N, figure of merit under off-resonance conditions FOMoff = 12.1 x 10(-10) m(2)/N and fairly large eta of 94% were attained again for 5/5 BZT/BCT ceramics. These outstanding characteristics were ascribed to the R-O-T phase boundary region that comprises a low energy barrier, consequently facilitated easy polarization rotation and triggered an increased electro-mechanical conversion. These characteristics outperform other lead-free and even most commercially available lead-based ceramics, and thus suitable for sensors, actuators, resonators, and energy harvesting applications.",
  address="WILEY",
  chapter="169316",
  doi="10.1111/jace.17497",
  howpublished="online",
  institution="WILEY",
  number="2",
  volume="104",
  year="2021",
  month="february",
  pages="1088--1101",
  publisher="WILEY",
  type="journal article in Web of Science"
}